CN104132557A - Intermediate liquid discharge type efficient condensation system - Google Patents

Intermediate liquid discharge type efficient condensation system Download PDF

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Publication number
CN104132557A
CN104132557A CN201410368818.9A CN201410368818A CN104132557A CN 104132557 A CN104132557 A CN 104132557A CN 201410368818 A CN201410368818 A CN 201410368818A CN 104132557 A CN104132557 A CN 104132557A
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CN
China
Prior art keywords
heat exchanger
stage
prime
rear class
collector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410368818.9A
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Chinese (zh)
Inventor
李永堂
吴俐俊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
YANTAI JIAQUN EFFICIENT ENERGY SAVING EQUIPMENT Co Ltd
Original Assignee
YANTAI JIAQUN EFFICIENT ENERGY SAVING EQUIPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by YANTAI JIAQUN EFFICIENT ENERGY SAVING EQUIPMENT Co Ltd filed Critical YANTAI JIAQUN EFFICIENT ENERGY SAVING EQUIPMENT Co Ltd
Priority to CN201410368818.9A priority Critical patent/CN104132557A/en
Publication of CN104132557A publication Critical patent/CN104132557A/en
Pending legal-status Critical Current

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Abstract

The invention provides an intermediate liquid discharge type efficient condensation system. The rear end of a heat exchange tube of a front-stage heat exchanger is connected with a front-stage leading-out end header, the front end of the heat exchanger of a rear-stage heat exchanger is connected with a rear-stage inlet end header, and the rear end is connected with a rear-stage leading-out end header. The front-stage leading-out end header is connected with the rear-stage inlet end header through a pipeline so as to lead gas discharged by the front-stage heat exchanger into the rear-stage heat exchanger. The front-stage heat exchanger and the front-stage heat exchanger are located in the same box body or located in different boxes respectively, the lower end of the box body is provided with an air inlet, and the upper end of the box body is provided with an axial flow fan. According to the intermediate liquid discharge type efficient condensation system, intermediate liquid discharge is conducted at the tail end of the front-stage heat exchanger, the gas discharged by the front-stage heat exchanger is led into the rear-stage heat exchanger, flow of fluid in the heat exchange pipeline is facilitated, and the liquid membrane discharge speed in the heat exchange pipeline is increased, so that the heat exchange coefficient is increased greatly; due to the fact that the flow velocity of steam in the liquid membrane flow direction is increased, the liquid membrane can form the turbulent flow and is blown away from the wall surface, and thus the heat exchange coefficient is increased.

Description

Middle discharge opeing formula high-efficiency condensation system
 
Technical field
The present invention relates to a kind of condensing unit, being mainly used in gas or steam condensing is liquid.
Technical background
Condensation condensation heat transfer including steam condensing mainly contains two kinds of forms: one is film condensation; Another kind is pearl (dripping shape) condensation.Pearl condensation, its surface coefficient of heat transfer is than large several times even large one orders of magnitude of film condensation.The condensation of steam in horizontal tube (or tube sheet), belongs to film condensation substantially.When film condensation, wall is always covered with by one deck liquid film, condenses to emit the heat of transformation (latent heat) and must just can pass on cooling wall through liquid film.Therefore, the main feature of film condensation, the thermal resistance that is exactly condensation heat transfer process almost all concentrates in condensate film.For film condensation, want to improve its coefficient of heat transfer, just necessary reducer film thickness, or turbulization film condensation heat transfer, the transmission of heat like this, except the laminar sublayer as thin as a wafer near wall still relies on heat-conducting mode, beyond laminar sublayer, taking turbulent flow transmission as main, heat exchange efficiency is significantly increased.
Existing condenser is unresolved above-mentioned technical problem all, owing to generally can forming gas-liquid mixed phase in its outlet end collector, not only gas phase refluxes and hinders flowing of heat exchanging pipe inner fluid, and is unfavorable for reducer film thickness, therefore heat exchange efficiency is lower, and condensation effect can not be satisfactory.
Summary of the invention
Technical problem to be solved by this invention is that the middle discharge opeing formula high-efficiency condensation system that a kind of coefficient of heat transfer and condensation efficiency are higher is provided.
For achieving the above object, the present invention has adopted following technical scheme.
Middle discharge opeing formula high-efficiency condensation system, comprise prime heat exchanger, the heat exchanger tube rear end of prime heat exchanger is connected with prime exit collector, it is characterized in that: also comprise rear class heat exchanger, the heat exchanger tube front end of rear class heat exchanger is connected with rear class upstream end collector, and rear end is connected with rear class exit collector; Prime exit collector is connected with rear class upstream end collector by pipeline, introduces rear class heat exchanger for the gas that prime heat exchanger is discharged; Discharging tube in the middle of prime exit collector is also connected with; Prime heat exchanger and rear class heat exchanger are positioned at same casing or lay respectively at different casings, and described casing lower end is provided with axial flow blower with air inlet, upper end.
Also comprise the shower that is positioned at heat exchanger top.
Prime exit collector and rear class exit collector are connected with respectively fluid-tight.Or, also comprise auxiliary condenser; The exit collector of afterbody heat exchanger is connected with reservoir; Reservoir is connected with described auxiliary condenser by escape pipe.The present invention has following characteristics.
The present invention has implemented middle discharge opeing at prime heat exchanger end, and prime exit collector is connected with rear class upstream end collector by pipeline, the gas that prime heat exchanger is discharged is introduced in rear class heat exchanger, be conducive to flowing of heat exchanging pipe inner fluid, and accelerated the discharge of liquid film in heat exchanging pipe.Accelerate the discharge of liquid film, be equivalent to reducer film thickness even liquid film taken away wall, locally produce similar dropwise condensation effect, thereby make the coefficient of heat transfer significantly increase.Owing to having increased the steam flow velocity of suitable liquid film flow direction, can make liquid film turbulization, also can make on the other hand liquid film by the wall that blows off, thereby the coefficient of heat transfer is increased.
Middle discharge opeing can effectively improve the utilization rate of heat exchanger heat-transfer surface, and therefore structure of the present invention can ensure that prime heat exchanger is all the time in high efficient heat exchanging state.
Brief description of the drawings
Fig. 1 is structure and the operation principle schematic diagram of the embodiment of the present invention one and embodiment bis-.Wherein embodiment mono-does not relate to components A 4, A5, A6, A13 and the A14 in Fig. 1.
Fig. 2 is structure and the operation principle schematic diagram of the embodiment of the present invention three and embodiment tetra-.Wherein embodiment tri-does not relate to part B 4, B5, B6, A10 and the filler in Fig. 1.
Detailed description of the invention
Further illustrate the present invention below in conjunction with the drawings and specific embodiments.
Embodiment mono-
The present embodiment is a kind of overall air cooled condenser.
As shown in Figure 1, embodiments of the invention comprise that lower end is provided with the A casing A1 of A axial flow blower A15 with A air inlet A7, upper end.A prime heat exchanger A3 and A rear class heat exchanger A2 are installed in A casing A1, and the heat exchanger tube front end of A prime heat exchanger A3 is connected with A prime upstream end collector A10, and rear end is connected with A prime exit collector A9.The heat exchanger tube front end of A rear class heat exchanger A2 is connected with A rear class upstream end collector A12, and rear end is connected with A rear class exit collector A11.A prime exit collector A9 is connected with A rear class upstream end collector A12 by pipeline, introduces A rear class heat exchanger A2 for the gas that A prime heat exchanger A3 is discharged.
The middle discharging tube that A prime exit collector A9 connects can be connected reservoir by A fluid-tight A8 respectively with the A rear class exit collector A11 including the exit collector of afterbody heat exchanger.
The exit collector of afterbody heat exchanger also can directly connect reservoir, now, auxiliary condenser need be set, and reservoir is provided with the escape pipe and the liquid back pipe that are connected with auxiliary condenser respectively.Gas in reservoir is back to reservoir after auxiliary condenser condensation liquefaction.Reservoir also can only be provided with the escape pipe being connected with auxiliary condenser, and the gas in reservoir flows to other reservoir after auxiliary condenser condensation liquefaction.And other heat exchanger exit collector outside afterbody heat exchanger is generally connected with reservoir by A fluid-tight A8.
Under A axial flow blower A15 effect, cold wind enters in A casing A1 and flow through A prime heat exchanger A3 and A rear class heat exchanger A2 from A air inlet A7, carries out discharging from A casing A1 upper end after heat exchange with heat exchanger tube inner fluid.
Embodiment bis-
The present embodiment is a kind of overall evaporative condenser.
Still as Fig. 1, on the basis of embodiment mono-, the present embodiment also comprises the A water leg A6 that is positioned at A casing A1 below, connects the A water pump A5 of A water leg A6 and is arranged on the A shower A13 of heat exchanger top in A casing A1, and wherein A water pump A5 is connected with A shower A13 by A upper hose A4.A filler A14 between A axial flow blower A15 and A shower A13 is also installed in A casing A1.
During as evaporative condenser, A prime heat exchanger A3 and A rear class heat exchanger the A2 preferably mode of being arranged above and below arrange.The spray water flow flowing down from top heat exchanger is fallen in A water leg A6 after the heat exchanger of below.
In A casing A1 of the present invention, heat exchanger can be the two-stage shown in Fig. 1, can be also more than three grades, and three grades of above adjacent front and back level annexations are with embodiment mono-.
Embodiment tri-
The present embodiment is a kind of split air cooled condenser.
As shown in Figure 1, embodiments of the invention comprise two backing condenser I and a rear class condenser II.Backing condenser I and rear class condenser II all have following structure: condenser comprises that lower end is provided with the B casing B1 of B axial flow blower B11 with B air inlet B7, upper end.In B casing B1, heat exchanger B3 is installed, the heat exchanger tube front end of heat exchanger B3 is connected with upstream end collector B2, and rear end is connected with exit collector B9.Under B axial flow blower B11 effect, cold wind enters in B casing B1 and the heat exchanger B3 that flows through from B air inlet B7, carries out discharging from B casing B1 upper end after heat exchange with the heat exchanger tube inner fluid of heat exchanger B3.
The exit collector B9 of two backing condenser I is connected with the upstream end collector B2 of rear class condenser II by gas piping B12, introduces the heat exchanger B3 of rear class condenser II for the gas that two backing condenser I are discharged.
The middle discharging tube that the exit collector B9 of backing condenser I connects and the exit collector B9 of rear class condenser II can be connected with respectively B fluid-tight B8, and B fluid-tight B8 connects reservoir by total discharging tube B13.
Wherein the exit collector B9 of afterbody condenser also can directly connect reservoir, now, auxiliary condenser need be set, and reservoir is provided with the escape pipe and the liquid back pipe that are connected with auxiliary condenser respectively.Gas in reservoir is back to reservoir after auxiliary condenser condensation liquefaction.Reservoir also can only be provided with the escape pipe being connected with auxiliary condenser, and the gas in reservoir flows to other reservoir after auxiliary condenser condensation liquefaction.
Embodiment tetra-
The present embodiment is a kind of split evaporative condenser.
Still as Fig. 2, on the basis of embodiment tri-, the condenser of the present embodiment also comprises the B water leg B6 that is positioned at B casing B1 below, connect the B water pump B5 of B water leg B6 and be arranged on the B shower B10 of heat exchanger top in B casing B1, wherein B water pump B5 is connected with B shower B10 by B upper hose B4.Filler between B axial flow blower B11 and B shower B10 is also installed in B casing B1.
The present invention can be two backing condenser I and the rear class condenser II shown in Fig. 2, the number of units of backing condenser I also can be not limited to two, but be more than one or three, the number of units of rear class condenser II is also not limited to-mono-, can be also more than two.But the annexation between forward and backward level condenser all the time: the exit collector of backing condenser is connected with the upstream end collector of rear class condenser by gas piping, introduces the heat exchanger of rear class condensation for the gas that backing condenser is discharged.

Claims (4)

1. discharge opeing formula high-efficiency condensation system in the middle of, comprise prime heat exchanger, the heat exchanger tube rear end of prime heat exchanger is connected with prime exit collector, it is characterized in that: also comprise rear class heat exchanger, the heat exchanger tube front end of rear class heat exchanger is connected with rear class upstream end collector, and rear end is connected with rear class exit collector; Prime exit collector is connected with rear class upstream end collector by pipeline, introduces rear class heat exchanger for the gas that prime heat exchanger is discharged; Discharging tube in the middle of prime exit collector is also connected with; Prime heat exchanger and rear class heat exchanger are positioned at same casing or lay respectively at different casings, and described casing lower end is provided with axial flow blower with air inlet, upper end.
2. middle discharge opeing formula high-efficiency condensation system as claimed in claim 1, is characterized in that: also comprise the shower that is positioned at heat exchanger top.
3. middle discharge opeing formula high-efficiency condensation system as claimed in claim 1 or 2, is characterized in that: prime exit collector and rear class exit collector are connected with respectively fluid-tight.
4. middle discharge opeing formula high-efficiency condensation system as claimed in claim 1 or 2, is characterized in that: also comprise auxiliary condenser; The exit collector of afterbody heat exchanger is connected with reservoir; Reservoir is connected with described auxiliary condenser by escape pipe.
CN201410368818.9A 2014-07-30 2014-07-30 Intermediate liquid discharge type efficient condensation system Pending CN104132557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410368818.9A CN104132557A (en) 2014-07-30 2014-07-30 Intermediate liquid discharge type efficient condensation system

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Application Number Priority Date Filing Date Title
CN201410368818.9A CN104132557A (en) 2014-07-30 2014-07-30 Intermediate liquid discharge type efficient condensation system

Publications (1)

Publication Number Publication Date
CN104132557A true CN104132557A (en) 2014-11-05

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104457308A (en) * 2014-11-18 2015-03-25 重庆蜀东天益空气冷却器有限公司 Evaporative condenser with contraflow section
CN104833237A (en) * 2015-04-07 2015-08-12 江苏宇星工贸有限公司 Iron oxide red production vapor waste heat recovery system
WO2021012936A1 (en) * 2019-07-23 2021-01-28 李永堂 Plate heat exchanger having flow-dividing plate path
CN112461013A (en) * 2020-11-17 2021-03-09 同济大学 Step-by-step condensation efficient anti-scaling evaporative condenser

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006023053A (en) * 2004-07-09 2006-01-26 Toshiba Corp Air-cooled condenser
CN101025340A (en) * 2007-03-30 2007-08-29 清华大学 Multi-stage cooling middle liquid-separation air condensator
CN101307993A (en) * 2008-06-04 2008-11-19 李永堂 Evaporative heat exchanger
WO2009009928A1 (en) * 2007-07-18 2009-01-22 Tsinghua University Condensing and heat transferring method having automatic liquid dividing function and apparatus thereof
CN101504255A (en) * 2009-03-02 2009-08-12 清华大学 Vapor-liquid separation method for horizontal condenser and condenser
CN101539386A (en) * 2009-04-03 2009-09-23 清华大学 Vapor-liquid separation method of evaporator and evaporator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006023053A (en) * 2004-07-09 2006-01-26 Toshiba Corp Air-cooled condenser
CN101025340A (en) * 2007-03-30 2007-08-29 清华大学 Multi-stage cooling middle liquid-separation air condensator
WO2009009928A1 (en) * 2007-07-18 2009-01-22 Tsinghua University Condensing and heat transferring method having automatic liquid dividing function and apparatus thereof
CN101307993A (en) * 2008-06-04 2008-11-19 李永堂 Evaporative heat exchanger
CN101504255A (en) * 2009-03-02 2009-08-12 清华大学 Vapor-liquid separation method for horizontal condenser and condenser
CN101539386A (en) * 2009-04-03 2009-09-23 清华大学 Vapor-liquid separation method of evaporator and evaporator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104457308A (en) * 2014-11-18 2015-03-25 重庆蜀东天益空气冷却器有限公司 Evaporative condenser with contraflow section
CN104833237A (en) * 2015-04-07 2015-08-12 江苏宇星工贸有限公司 Iron oxide red production vapor waste heat recovery system
WO2021012936A1 (en) * 2019-07-23 2021-01-28 李永堂 Plate heat exchanger having flow-dividing plate path
CN112461013A (en) * 2020-11-17 2021-03-09 同济大学 Step-by-step condensation efficient anti-scaling evaporative condenser

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Application publication date: 20141105